Attaching property links to the classes rather than instances
Attaching property links to the classes rather than instances

- Addresses point 4 of http://opwn.blogspot.com/2014/08/
  as-ive-been-using-pyopenworm-ive.html


Former-commit-id: b0227a22a12bd9ce32f90e7b2ae91380e8265dee
kaustubhcs/PyOpenWorm,openworm/PyOpenWorm,gsarma/PyOpenWorm,gsarma/PyOpenWorm,travs/PyOpenWorm,hnunner/PyOpenWorm,openworm/PyOpenWorm